exec_delete

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 669
      def exec_delete(sql, name = 'SQL', binds = [])
        log(sql, name, binds) do
          result = binds.empty? ? exec_no_cache(sql, binds) :
                                  exec_cache(sql, binds)
          affected = result.cmd_tuples
          result.clear
          affected
        end
      end